re: HST's altitude...
[Hubble is at an altitude of 380 miles (612 kilometers), inclined 28.5 degrees to the equator while the ISS orbits at altitude ranging roughly between 225 miles (362 kilometers) and 264 miles (425 kilometers), inclined at 51.6 degrees to the equator.]
space.com (BTW, it would be great if they could bring it back safely to Earth someday - mho).
